linux-kernel - Re: [PATCH] kbuild: verify dtoverlay files against schema

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Date: Tue, 28 May 2024 16:16:27 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Rob Herring <robh@...nel.org>
Cc: Masahiro Yamada <masahiroy@...nel.org>, Nathan Chancellor <nathan@...nel.org>, 
	Nicolas Schier <nicolas@...sle.eu>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org, 
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kbuild: verify dtoverlay files against schema

On Tue, 28 May 2024 at 16:15, Rob Herring <robh@...nel.org> wrote:
>
> On Mon, May 27, 2024 at 6:34 AM Dmitry Baryshkov
> <dmitry.baryshkov@...aro.org> wrote:
> >
> > Currently only the single part device trees are validated against DT
> > schema. For the multipart schema files only the first file is validated.
>
> What do you mean by multipart schema files? Did you mean multipart DTs
> (i.e. base plus overlays)?

Yes, multipart DT files, dts + dtso => dtb + dtbo => final dtb

>
> Looks good otherwise and I can fix that up.

Awesome, thanks!

>
> > Extend the fdtoverlay commands to validate the resulting DTB file
> > against schema.
> >
> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> > ---
> >  scripts/Makefile.lib | 9 ++++++++-
> >  1 file changed, 8 insertions(+), 1 deletion(-)
> >
> > diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> > index 9f06f6aaf7fc..29da0dc9776d 100644
> > --- a/scripts/Makefile.lib
> > +++ b/scripts/Makefile.lib
> > @@ -407,8 +407,15 @@ cmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ;
> >                 -d $(depfile).dtc.tmp $(dtc-tmp) ; \
> >         cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
> >
> > +DT_CHECK_CMD = $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA)
> > +
> > +ifneq ($(CHECK_DTBS),)
> > +quiet_cmd_fdtoverlay = DTOVLCH $@
> > +      cmd_fdtoverlay = $(objtree)/scripts/dtc/fdtoverlay -o $@ -i $(real-prereqs) ; $(DT_CHECK_CMD) $@ || true
> > +else
> >  quiet_cmd_fdtoverlay = DTOVL   $@
> >        cmd_fdtoverlay = $(objtree)/scripts/dtc/fdtoverlay -o $@ -i $(real-prereqs)
> > +endif
> >
> >  $(multi-dtb-y): FORCE
> >         $(call if_changed,fdtoverlay)
> > @@ -421,7 +428,7 @@ DT_BINDING_DIR := Documentation/devicetree/bindings
> >  DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.json
> >
> >  quiet_cmd_dtb =        DTC_CHK $@
> > -      cmd_dtb =        $(cmd_dtc) ; $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ || true
> > +      cmd_dtb =        $(cmd_dtc) ; $(DT_CHECK_CMD) $@ || true
> >  else
> >  quiet_cmd_dtb = $(quiet_cmd_dtc)
> >        cmd_dtb = $(cmd_dtc)
> >
> > ---
> > base-commit: 8314289a8d50a4e05d8ece1ae0445a3b57bb4d3b
> > change-id: 20240527-dtbo-check-schema-4f695cb98de5
> >
> > Best regards,
> > --
> > Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> >



-- 
With best wishes
Dmitry